Features – Mil-spec forged 7075 -T6 aluminum upper and lower receivers with mil -spec matte black type -III hard coat anodize finish – Colt free -float rail with Magpul M-LOK features a full length M1913 picatinny top rail and 7 -orientations of M -LOK mounting surfaces. – The rail includes integrated steel QD sling swivel sockets and anti rotation tabs – 10.3 and 11.5 barrel options with manganese phosphate finish and chrome lined. – Direct gas impingement operating system – SBA5 pistol stabilizing brace and 6 -position mil -spec extension – Includes 30rd Magpul PMAG Magazine – Model M4 Pistol – Barrel Length 11.5 – Capacity 30 1 – Caliber 5.56x45mm – Weight 5.9 lbs – Twist Rate 1:7 RH 6 groove – OAL 28-30.5 – Action Semi – Trigger Type Single Stage
